YousefED / YousefED/typescript-json-schema

noExtraProps flag not working with recursive type

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#562 6 comments 0 reactions 0 assignees View on GitHub

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Dominant language
TypeScript
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Description

Steps to Reproduce:
version: 0.59.0
create schema for Foo type, and turn on the flag noExtraProps.

interface ChildFoo {}

interface Foo {
    childFoo: Foo & ChildFoo;
}

The error:
Maximum call stack size exceeded.

Because we merging the object, instead of use in allOf (see #107), in recursive type we trying to build schema for parent and child again and again.

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  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Start by reproducing the TypeScript example with version 0.59.0 and the noExtraProps flag, then inspect the recursive handling of the Foo and ChildFoo types. Compare the object-merging behavior with the allOf approach mentioned in #107; done means recursive types generate a schema without a maximum call stack error.

Written by the indexing model from the issue text.

Assessment

Tech stack
typescript
Domain
tooling
Issue type
Bug
Difficulty
4/5
Estimated time
3-5 days
Activity status
Stale
Clarity
Mostly clear
Newbie friendliness
35/100

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